<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./variable.css">
    <link rel="stylesheet" href="./1.css">
</head>
<style>
    * {margin: 0; padding: 0;}
</style>
<body>
    <main>test css variable</main>

    <script>
        // let main = document.querySelector("main");
        // main.style.color = 'var(--js-set-color)';
        // main.style.fontSize = 'var(--f-24)';
    </script>
</body>
</html>